Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next-2.6: (98 commits)
  sparc: move select of ARCH_SUPPORTS_MSI
  sparc: drop SUN_IO
  sparc: unify sections.h
  sparc: use .data.init_task section for init_thread_union
  sparc: fix array overrun check in of_device_64.c
  sparc: unify module.c
  sparc64: prepare module_64.c for unification
  sparc64: use bit neutral Elf symbols
  sparc: unify module.h
  sparc: introduce CONFIG_BITS
  sparc: fix hardirq.h removal fallout
  sparc64: do not export pus_fs_struct
  sparc: use sparc64 version of scatterlist.h
  sparc: Commonize memcmp assembler.
  sparc: Unify strlen assembler.
  sparc: Add asm/asm.h
  sparc: Kill memcmp_32.S code which has been ifdef'd out for centuries.
  sparc: replace for_each_cpu_mask_nr with for_each_cpu
  sparc: fix sparse warnings in irq_32.c
  sparc: add include guards to kernel.h
  ...

1 files changed, 95 insertions, 0 deletions

diff --git a/arch/sparc/lib/strlen_user_64.S b/arch/sparc/lib/strlen_user_64.S
new file mode 100644
index 00000000000..114ed111e25
--- /dev/null
+++ b/arch/sparc/lib/strlen_user_64.S
@@ -0,0 +1,95 @@
+/* strlen_user.S: Sparc64 optimized strlen_user code
+ *
+ * Return length of string in userspace including terminating 0
+ * or 0 for error
+ *
+ * Copyright (C) 1991,1996 Free Software Foundation
+ * Copyright (C) 1996,1999 David S. Miller (davem@redhat.com)
+ * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ */
+
+#include <asm/asi.h>
+
+#define LO_MAGIC 0x01010101
+#define HI_MAGIC 0x80808080
+
+	.align 4
+	.global __strlen_user, __strnlen_user
+__strlen_user:
+	sethi	%hi(32768), %o1
+__strnlen_user:	
+	mov	%o1, %g1
+	mov	%o0, %o1
+	andcc	%o0, 3, %g0
+	be,pt	%icc, 9f
+	 sethi	%hi(HI_MAGIC), %o4
+10:	lduba	[%o0] %asi, %o5
+	brz,pn	%o5, 21f
+	 add	%o0, 1, %o0
+	andcc	%o0, 3, %g0
+	be,pn	%icc, 4f
+	 or	%o4, %lo(HI_MAGIC), %o3
+11:	lduba	[%o0] %asi, %o5
+	brz,pn	%o5, 22f
+	 add	%o0, 1, %o0
+	andcc	%o0, 3, %g0
+	be,pt	%icc, 13f
+	 srl	%o3, 7, %o2
+12:	lduba	[%o0] %asi, %o5
+	brz,pn	%o5, 23f
+	 add	%o0, 1, %o0
+	ba,pt	%icc, 2f
+15:	 lda	[%o0] %asi, %o5
+9:	or	%o4, %lo(HI_MAGIC), %o3
+4:	srl	%o3, 7, %o2
+13:	lda	[%o0] %asi, %o5
+2:	sub	%o5, %o2, %o4
+	andcc	%o4, %o3, %g0
+	bne,pn	%icc, 82f
+	 add	%o0, 4, %o0
+	sub	%o0, %o1, %g2
+81:	cmp	%g2, %g1
+	blu,pt	%icc, 13b
+	 mov	%o0, %o4
+	ba,a,pt	%xcc, 1f
+
+	/* Check every byte. */
+82:	srl	%o5, 24, %g7
+	andcc	%g7, 0xff, %g0
+	be,pn	%icc, 1f
+	 add	%o0, -3, %o4
+	srl	%o5, 16, %g7
+	andcc	%g7, 0xff, %g0
+	be,pn	%icc, 1f
+	 add	%o4, 1, %o4
+	srl	%o5, 8, %g7
+	andcc	%g7, 0xff, %g0
+	be,pn	%icc, 1f
+	 add	%o4, 1, %o4
+	andcc	%o5, 0xff, %g0
+	bne,pt	%icc, 81b
+	 sub	%o0, %o1, %g2
+	add	%o4, 1, %o4
+1:	retl
+	 sub	%o4, %o1, %o0
+21:	retl
+	 mov	1, %o0
+22:	retl
+	 mov	2, %o0
+23:	retl
+	 mov	3, %o0
+
+        .section .fixup,#alloc,#execinstr
+        .align  4
+30:
+        retl
+         clr    %o0
+
+	.section __ex_table,"a"
+	.align	4
+
+	.word	10b, 30b
+	.word	11b, 30b
+	.word	12b, 30b
+	.word	15b, 30b
+	.word	13b, 30b